cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A073663 Total number of branches of length k (k>=1) in all ordered trees with n+k edges (it is independent of k).

Table of values

n a(n)
0 1
1 2
2 8
3 30
4 113
5 428
6 1629
7 6226
8 23881
9 91884
10 354484
11 1370812
12 5312058
13 20622904
14 80196055
15 312319530
16 1217938665
17 4755296460
18 18586968840
19 72723903780
20 284804791230
21 1116315593640
22 4378929921210
23 17189573707956

List of values

[1, 2, 8, 30, 113, 428, 1629, 6226, 23881, 91884, 354484, 1370812, 5312058, 20622904, 80196055, 312319530, 1217938665, 4755296460, 18586968840, 72723903780, 284804791230, 1116315593640, 4378929921210, 17189573707956]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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